P9025AC Datasheet, PDF (1/20 Pages) Integrated Device Technology – 5W, Qi Wireless Power Receiver

5W, Qi Wireless Power Receiver with Integrated
Rectifier and LDO Output
P9025AC
DATASHEET
Features
• Integrated Single Chip Receiver (Rx) Solution
• Integrated Full-Bridge Synchronous Rectifier
• Integrated 5.3V, 1A LDO Regulator Output
• WPC-1.1.2 compliant
• Advanced WPC v1.1.2 Foreign Object Detection (FOD)
• Programmable FOD setting via external resistor
• Closed-loop power transfer control between Tx and Rx
• Support I²C interface with access to:
• Rectifier voltage
• Output current
• Resonance frequency
• Open-Drain LED Indicator Output
• Over-Temperature/Voltage/Current Protection
• 0° to +85°C temperature range
• 5 x 5 mm 32-VFQFPN package
Applications
• PC peripherals
• Rugged electronic gear
• Small appliances
• Battery-powered electronics
Introduction
The P9025AC is an integrated single-chip, WPC-1.1.2
compliant wireless power receiver with an advanced Foreign
Object Detection (FOD) feature. This device operates with an
AC power signal from a resonant tank and converts it into a
regulated 5.3V output voltage. The receiver includes a high
efficiency Synchronous Full Bridge Rectifier and 5.3V tracking
LDO output stage. The P9025AC automatically detects the
transmitter’s presence and initiates WPC AC modulation
communication protocols with optimal efficiency.
The device includes the control circuit required to modulate
the load to transmit WPC-compliant message packets to the
base station. It uses minimal external components to reduce
overall solution area and costs.
The P9025AC employs advanced programmable WPC FOD
techniques to detect foreign metallic objects placed on the
transmitter base station derived from a transmitted and
received power transfer algorithm.
Typical Application Circuit
C_BST1
C_CLAMP1
BST1
CLAMP1
P9025AC
C_S
C_MOD1 ^ACM1
AC1
OUT
SNS
ILIM
C_OUT
R_lim
V_OUT=5.3V
L_RX
C_D
C_RECT
C_MOD2
C_CLAMP2
C_BST2
AC2
ACM2
CLAMP2
BST2
Interupt
Enable
Charge
Complete
INT
VRECT
EN
CHG_END / CS100
AGND
PGND
STAT
FOD1
FOD2
TEOP
VDD
R₁
R_FOD1
R_FOD2
C1
Temperature
Sense
SCL
SCL
SDA
SDA
P9025AC 09/01/15
1
©2015 Integrated Device Technology, Inc.